Patents by Inventor Katsuhiro Horita

Katsuhiro Horita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6232377
    Abstract: A flame retardant composition comprising (A) about 50 to about 95 percent by weight of at least one ethylene co-polymer selected from an ethylene/vinyl ester copolymer; ethylene/alpha, beta unsaturated carboxylate copolymer; and very low density ethylene/alpha-olefin copolymer; and (B) about 5 to about 50 percent by weight of an ethylene/alpha-olefin copolymer having been prepared with a single site catalyst, and, for each 100 parts by weight of component (A) and component (B) combined, (C) about 2 to about 50 parts by weight of a polyethylene modified with a functional group containing compound; (D) about 5 to about 250 parts by weight of a metal hydrate; (E) about 1 to about 12 parts by weight of a triazine ring containing compound; and (F) about 0.5 to about 5 parts by weight of a flame retardant compound selected from the group consisting of a boron compound, a molybdenum compound, and a silicone.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: May 15, 2001
    Assignee: Nippon Unicar Company Ltd.
    Inventors: Akio Hayashi, Katsuhiro Horita, Koji Ishihara
  • Patent number: 6020411
    Abstract: A composition comprising:(i) a mixture of about 40 to about 80 percent by weight of a copolymer of ethylene and an alpha-olefin having a melt index in the range of about 0.1 to about 10 grams per 10 minutes and a density in the range of 0.870 to 0.930 gram per cubic centimeter and about 20 to about 60 percent by weight of a copolymer of ethylene and ethyl acrylate having a melt index in the range of about 0.1 to about 50 grams per 10 minutes and an ethyl acrylate content in the range of about 10 to about 40 percent by weight, and for each 100 parts by weight of said mixture,(ii) about 30 to about 150 parts by weight of a mixture of talc and calcium carbonate wherein the weight ratio of talc to calcium carbonate is in the range of about 0.3:1 to about 1.2:1; and(iii) about 1 to about 20 parts by weight of an organopolysiloxane having a kinematic viscosity in the range of about 0.06 to about 2 meters per second as measured at 23 degrees C.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: February 1, 2000
    Assignee: Nippon Unicar Company Limited
    Inventors: Shoji Hayashi, Katsuhiro Horita, Koji Ishihara
  • Patent number: 5889087
    Abstract: A cable comprising one or more electrical conductors or communications media, or a core of two or electrical conductors or communications media, each electrical conductor, communications medium, or core being surrounded by a composition comprising:(A) about 40 to about 93 percent by weight of at least one resin selected from the group consisting of ethylene/vinyl acetate copolymer, ethylene/ethyl acrylate copolymer, and an ethylene/alpha-olefin copolymer having a density equal to or less than 0.915 gram per cubic centimeter.(B) about 5 to about 50 percent by weight of a linear ethylene/alpha-olefin copolymer produced by using a single-site metallocene catalyst and having a melt flow rate of about 0.5 to about 50 grams per 10 minutes; a density of 0.86 to 0.91 gram per cubic centimeter; and an Mw/Mn ratio equal to or less than about 3.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: March 30, 1999
    Assignee: Nippon Unicar Company Limited
    Inventors: Akio Hayashi, Katsuhiro Horita
  • Patent number: 5707732
    Abstract: A cable comprising one or more electrical conductors or communications media, or a core of two or more electrical conductors or communications media, each electrical conductor, communications medium, or core being surrounded by a composition, which is essentially halogen free, comprising 100 parts by weight of a mixture of resins and 5 to 250 parts by weight of a flame retardant compound, which is either magnesium hydroxide, coated or uncoated, or aluminum trihydrate, wherein the resins in the mixture are as follows:(i) a polyethylene made using a metallocene single site catalyst system, said polyethylene having an Mw/Mn ratio of no greater than about 3;(ii) a polyethylene made using a transition metal catalyst system other than a metallocene single site catalyst system, said polyethylene having an Mw/Mn ratio greater than about 4;(iii) optionally, a copolymer of ethylene and an unsaturated ester or a very low density polyethylene having a density no greater than 0.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: January 13, 1998
    Assignee: Nippon Unicar Company Limited
    Inventors: Masazumi Sonoda, Katsuhiro Horita
  • Patent number: 5425992
    Abstract: A coated wire comprising:(i) an electrical conductor coated with(ii) a mixture of (a) two linear copolymers of ethylene and one alpha-olefin having 3 to 8 carbon atoms, the first ethylene copolymer having a density of about 0.900 to 0.930 gram per cubic centimeter and a melt index of about 0.1 to about 5 grams per 10 minutes and the second ethylene copolymer having a density of 0.931 to about 0.950 gram per cubic centimeter and a melt index of about 0.1 to about 5 grams per 10 minutes, and for each 100 parts by weight of the first ethylene copolymer, there are about 15 to about 100 parts by weight of the second ethylene copolymer, and (b) for each 100 parts by weight of component (a), there are about 65 to about 150 parts by weight of a mixture comprising huntite and hydromagnesite in a weight ratio of about 2:1 to about 1:1.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: June 20, 1995
    Assignee: Nippon Unicar Company Ltd.
    Inventors: Takeshi Tachikawa, Katsuhiro Horita
  • Patent number: 5025042
    Abstract: A composition comprising:(i) a thermoplastic resin; and(ii) magnesium hydroxide, the surface of which has been treated with an organic aminosilane.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: June 18, 1991
    Assignee: Nippon Unicar Company Limited
    Inventors: Mamoru Yoshida, Hachiro Suya, Shoji Hayashi, Takao Koshiyama, Satoshi Hashimoto, Katsuhiro Horita